Mathematics: exponential function, logarithmic function, trigonometric function and counting are full of hardships; Parallel straight lines, intersecting straight lines, non-planar straight lines, and affectionate lines.

Language: a wonderful pen and a wonderful work; Loyalty can be learned from deep-seated efforts.

Physics: how to measure the influence of cups and buckets on teachers' friendship; How can you measure Mr tape measure's thoughts?

English biology supplement later